Power Systems Which of the following transformer is used in sub station for operating a protective relay? capacitor voltage transformer auto transformer All of these distribution transformer capacitor voltage transformer auto transformer All of these distribution transformer ANSWER DOWNLOAD EXAMIANS APP
Power Systems Two insulator discs of identical capacitance value C make up a string for a 22 kV, 50 Hz, single phase overhead line insulation system. If pin to earth capacitance is also C, then find the string efficiency? 50% 86%% 90% 75% 50% 86%% 90% 75% ANSWER DOWNLOAD EXAMIANS APP
Power Systems A generated station has a maximum demand of 30 MW, a load factor of 60% and a plant capacity factor of 50%. The reserve capacity of the plant is 12 MW 10 MW 6 MW 5 MW 12 MW 10 MW 6 MW 5 MW ANSWER DOWNLOAD EXAMIANS APP
Power Systems The zero sequence current of a generator for line to ground fault is j3 pu. Then the current through the neutral during the fault is j6 pu j3 pu j9 pu j1 pu j6 pu j3 pu j9 pu j1 pu ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which type of connection is employed for current transformers for the protection of delta- star connected 3-phase transformer? star-delta delta-delta delta-star star-star star-delta delta-delta delta-star star-star ANSWER DOWNLOAD EXAMIANS APP
Power Systems A sort line with R/X ratio 1, the zero regulation is obtained when the power factor of the load is unity 0.5 0 leading 0.707 leading unity 0.5 0 leading 0.707 leading ANSWER DOWNLOAD EXAMIANS APP
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